Wagon-spring



(No Mndel.)

H. K.A 8: H. W. PELL. WAGON SPRING.

elle!" E VIL ,g TEMI- WTNESSES:

UNiTnn STATES PaTnT einen.

HENRY K. PELL AND HENRY W. PELL, OF ROME, NEIV YORK.

WAGON-SPRING.

SPECIFICATION forming part of Letters Patent No. 603,028, dated April 26, 1898. Application led September 8, 1897. Serial No. 650,967. (No model.)

T0 @ZZ whom t may concern,.-

Be it known that we, HENRY K. PELL and HENRY YV. PnLL,citizens of the United States, residing at Rome, in the county of Oneida and State of New York, have invented a new and useful Wagon-qpring; and we do hereby declare that the following, in connection with the accompanying drawings, is a full, clear, and exact description of the invention.

Our invention relates to three-part elliptic vehicle-springs, in which three semi-elliptic springs are used; and its novelty and utility lie in the form of the springs and the means by which they are secured in position. The connection between the springs is eifected at each end by three interlocking caps of peculiar construction iitted to receive the eyes on the ends of the springs. A bolt at each end, passing through the caps and eyes, secures the parts together and clamps the eyes of the center spring between inner extensions on the outer caps, so as to prevent independent motion thereof, the eyes of the outer springs being left free to rotate sufficiently on the bolt within their respective caps. The three caps being clamped by the bolt securely together are practically integral and act as a reinforcement to the bolt, relieving it of strain.

The springs are of a new form, being each formed with a short reverse bend near each end, next the eye, by which when compressed the springs register when horizontal-that is, at the time of greatest longitudinal expansion. By this construction a greater arch for the whole spring is obtained and greater resistance to compression, the wagon-body may be set lower and is made more stable, the eyes at the ends of each spring are in line with the axis of the main plate of the spring, and the end thrust is exerted in the line of greatest resistance with less leverage and strain on the caps and bolts.

Our invention will be understood by reference to the accompanying drawings, in which the same numerals of reference indicate the same parts in all the gures.

Figure I is a perspective view of an elliptic spring, showing my improvements. Fig. II is an enlarged view in perspective of one end of the springs in position in the caps. Fig. III is an elevation showing the caps slightly separated on the bolt. Fig. IV is-.a corresponding vertical longitudinal section showing the caps and the springs secured in position. Fig. V is a side elevation of the end of an upper spring, enlarged, showing its peculiar form. Fig. VI is a corresponding View of the end of the lower spring. Fig. VII is a View in elevation of the ends of the springs compressed substantially' to the horizontal position. Figs. VIII and IX illustrate the preceding form of spring. Fie. X is a diagram illustrating direction of end thrust in a spring of the form shown in Fig. VIII.

In the iigures, 1 indicatesthe upper springs, and 2 the lower, secured by usual means to the head-bloclr on the axle I of usual construction. The lower spring 2 is formed at its ends with bends 5 5 and eyes 6 6, and the upper springs 1 l at their endspwith bends 7 7 and eyes S S.

9 9 are the outer interlocking caps, substantially cylindrical in form, opening inwardly to receive the eyes of the upper springs 1 l and provided with the inner extensions 10 10, which extend through the end walls 12 12 of the inner cap. 11 a short distance into the chamber 13 of said cap 11, as best shown in Figs. III and IV, so that when the parts are assembled and secured in position by means of bolt 14 the eye G of the lower spring 2 is gripped securely between said extensions l0 l0, while the eyes S S of the upper springs are free to move on the bolt 14 as much as is necessary, as the whole spring is compressed and released. Thus it will be seen that the caps cover over and protect the ends of the springs, and the caps being held securely together without movement they may be on the outside well linished without there being any unsightly working joint, all motion being that of the ends of the springs 1 I on the bolt 14.

By forming the ends of the springs 2 and 1 1 With the bends 5 and 7 at their respective ends greater strength, stability, and resistance is obtained for springs of given sizes, as may be seen by comparing enlarged Figs. V, VI, and VII to Figs. VIII and IX, which latter illustrate the old form of spring not provided with such bends. In that old form of spring the upper and lower springs reach the horizontal or position of greatest extension before they register--that is, before their centers are forced into the same horizontal IOO eyes 'are in line with the axis of the main grain Fig. X.

rstan'tiallyrcyllindrical in form, and opening'inplane-.and when lthey do register, vas shown in Fig. IX, they have passed 4the vhorizontal position and have been, so to speak, turned Wrong side out, allowing the spring-sections to buckle, to break, and the plates to open, the spring then being indanger of breaking: and having comparatively vlittle strength to resist vibration and rocking of the Wagonbody.

Where the springs are made in our peculiar forni, they do not reach their horizontal posi-- tion of greatest extension as quickly as in y, the old form and a greater force is required to compress them to that position. lTherefore our springs of the saine size and strength give a greater' resistance, arein llessdanger of bei-'ng broken., land maybe set nearer together 'than the yold form, permitting fthe Wagon-body Ato beset lower and with lless vibration and rocking. It will be noticed that our springs reach the position of greatest extension yand register simultaneously.

As before stated., byour constructionthe plate of each spring, `and the line yof end thrust is'exertedfon a line through the center 0f the bolt with :less strainon the connection than in the old lforin of spring where fthe lline of :the end thrust passes outside of the bolt, as indicated bydotted lines in the dia- Having thus fully described our invention, lwhat we claim, and desire to protect by Letters Patent, is v l. In althree-partelliptic wagon-spr-in g, the cembinationof .the three springs, havingeyes at their ends, of three interlocking caps for receiving lthe eyes at eachend, andlof la bolt for securing the parts in position.

2. In a three-part elliptic spring, the Iconnlo'inat-ion of Athe three springs, having eyes at their ends, and three interlocking caps subwardfly toreceive the eyes of the springs, and bolts for securing the parts in position.

In a three-part wagon-spring, the combination of vthe three springs, havingeyes at v.their ends, three interlocking caps at each end su-bstantiallycylindrical-inform and having solid onter faces and openingson their inner faces for receiving the eyesof the springs n in'totheir hollow interiors, and bolts extending .through said eyes, and interlock-ing caps for retaining the parts in position.

4. In a three-part wagon-spring, the -coin-` bination of the three springs, having eyes at ltheir ends, three interlocking caps at "each end -forreceiving the-eyesftheonter caps correspondingly formed with extensions extending inwardly through openings in the inner cap to engage with the eyes of the inner spring, and of bolts for securing said parts in position.

5. In a three-part elliptic spring, the coinbina'tion of the three springs having eyes at their ends, of three interlocking caps at each end forreceiving the eyes of said springs, the inner caps having circular openings through their ends, and the outer caps correspond- -i-ngly formed with circular extensions extending inwardly through said openings a short distance into the interior of said middle cap to engage with the eyes of the inner spring, and bolts passing through said caps and eyes for securing the parts together.

6. In a three-partel'l-iptic spring, the combination 1of `the three springs having eyes at their ends, lof three interlocking caps substantially'cylindrical in forni, having solid outer faces-and cut-outs on their innerfaces to receive the eyes of the springs into their hollow interiors, the vinner caps having circular openings through Itheir ends, the outer caps:correspondinglyfornled withcircular eX- ftensions fitting said circular openings and eX- tending inwardly 'therethrough a short dis- 'tance into the interior of said Viniddle caps to engage with the Aeyes'oiz the inner spring and toprevent movement 'of said spring on 'the bol-ts, and-'of bolts secur-in-g'the parts together.

A7. In combination of a three-part elliptic Wagon-spring, the three springs `having eyes at both ends'of each, said eyes centering on the axis of the main plate of their-respective springs, interlocking caps vfor receiving the eyes, and bolts pass-ing through said caps and eyes.

'8. In combination, in a three-part elliptic wagon-spring, the upper springs provided with eyes a-nd -forrned `with short downward bends adjacent to the eyes, the lower spring also provided with eyes on its ends a-nd having-short upward bends adjacent to said-eyes, interlocking caps for `receiving said eyes, and bolts for securing the par-ts in position.

In witness whereof we have hereunto set four hands, in the presence of two attesting Witnesses, at Rome, lin the county of Oneida, in the State of New York, `this '26th day of July, 1897.

HENRY K. PELL. HENRY W. PELL.

Vitnesses:

PHILIP Il. MAsTnRsoN, GEO. E. MOORE.

XOO 

